At 22:20pm I could see two lights in the sky. They were flashing back and forth and then they would flicker and then go out and then repeat the same patern over again.

On march 3 2k 22:20 I was at work ((deleted)) In ogden utah, gathering carts when I happened to see two lights in the eastern sky. What caught my attention was the lights were flashing back and forth kind of like strob lights. They would do this for about 4 seconds and then flicker and then go out completly for about 5 to 8 seconds before coming back to a real bright lumination. The lights seemed to be hovering well over the wasatch mountians. I quickly phoned my aunt and uncle and they did see the same thing about 6 blocks away. No one that I know of saw the lights even at the store. Do you think these could be earth lights?